Oil-burning engine



R. M. HVID.

OIL BURNING ENGINE.-

APPLICATION FILED JUNE 9. 1919.

1 346, 205, Patented July 13, 1920.

2 SHEETS-SHEET I.

R. M. HVID.

on BURNING ENGINE.

APPLICATION FILED JUNE 9. I919- Patented July 13, 1920.

2 SHEETS-SHEET Z.-

STATES PATENT FFICE.

RASMUS M. HVID, OF CHICAGO, ILLINOIS.

OIL-BURNING ENGINE.

saaaos.

Application filed June 9,

To all whom it may concern Be it known that I, RASMUS M. Evil), a citizen of the United States, and resident of Chica o, inthe county of Cook and State of llinois, have invented certain new and useful Improvements in Oil-Burning Engines, of which the following is a specification.

One of the principal objects of the invention is to provide an overhead valve construction for engines of the Hvid type,

wherein hydrocarbons are burned without preliminary carburation and in which the fuel valve and the overhead valve rockers are mounted as a unit and may be applied to and removed from the cylinder head without disturbing the relation of these parts to the remainder of the engine. The result is secured by enlarging somewhat thehead of the fuel valve body and mounting thereon a bracket adapted to hold a short shaft on which the rockers are mounted for oscillation. This gives an advantageous result apart from the facility in applying and removing the parts; it obviates the necessity for a long shaft on the top of the enginecasting, a single shaft having heretofore been employed for supporting all the rocker arms. By my arrangement there is no necessity for expensive machine work or loss of time in assembling, the fuel valve, rocker arms and the actuating devices for the fuel and needle valves being all in a. unit.

A further novel feature is in the construction of the member which serves to connect adjacent needle valves to the governor. In my construction I provide a connecting strip in the form of a thin steel strip, the portions between the points of connection to the needle valve arms being bent at a right angle. Inasmuch as the strip is relatively flexible, any variations in alinement of the crank pins will be readily taken care of and there will be no appreciable binding nor necessity for accurate fitting in assembling.

A further novel feature is in the location of the oil supply passage at a point near the lower end of the fuel valve, the passage extending through the engine walls instead of through the head of the fuel valve as in the constructions heretofore used. By the present arrangement the fuel valve may be inserted and removed without interfering in any manner with the oil pipe connections.

A. further improvement is in the manner Specification of Letters Patent.

1919. Serial N0. 302,679.

of connection of the rocker arms to the fuel valve actuating arm. These parts are greatly simplified and accurate adjustment in order to control the extent of opening of the valve is made possible.

A further improvement is in the construction of the fuel cup itself. In the constructions heretofore proposed the fuel cup has been of relatively thin section with its walls spaced away from the relatively cool walls of the engine with the result that the cup has becomev unduly heated and has formed coke as a result thereof. I have dis covered that by making .the cup of thicker section and by fitting the same closely to the space I am able to radiate the heat much more rapidly the same being dissipated into the water cooled walls of the engine.

The invention will be more readily understood by reference to the accompanying drawings, wherein,

Figure 1 is a plan view of an engine constructed in accordance with my invention;

' Fig. 2 is an enlarged vertical section through the fuel 'alve thereof;

Fig. 3 is a plan view with some of the parts broken away; and

Fig. 4 is a fragmentary plan view of the fuel valve connecting strip.

In the drawings it will be seen that I have illustratcd a multicylinder engine indicated generally by the numeral 10. four cylinders being shown. Each of the cylinders will be provided with main intake and exhaust valves in the usual manner, these valves being actuated by rocker arms 11. 12, moved by the usual push rods 13 and cams not shown.

The engine is of the type in which liquid fuel is directly inhaled and in which ignition is effected by the heat of compression. The fuel supplying and ignition devices coinprise the valve body ll'having a flanged portion or head 15. A central bore 16 provides for a vertically reciprocable valve 17 and stem 18. The valve serves to control the admission of the liquid fuel past the needle valve 19 and a small quantity of air which is admitted through the orifice 20, shown in dotted lines in Fig. 2. The valve is maintained against its seat by means of the spring 21. It is opened in consonance with the main inlet valve by means of the short rocker 22, having ears 23 supported by the pin or shaft 24. At each side of the rocker I provide an inclined surface 25, adapted to be engaged by a threaded member 26 having a rounded end 27, as shown in Fig. 2. The member 26 is threaded into the intake rocker arm 11 and as the stroke of this arm is fixed, the degree of opening of the fuel admission valve 17 may be controlled by adjusting the threaded member 26 in a vertical direction. The incline 25 is provided on both sides of the rocker 22 in order to adapt it to either position of the intake valve, that is. the rocker 22 may be actuated by either of the rockers 11, 12 according to the position of the main air inlet valve.

The rocker arms 11. 12 are mounted on a short shaft 28 having a bearing at its ends in the apertured ears 29 which project upwardly from a bracket formed as a part of the head 15 of the valve body. As a means for securing the shaft in proper position 1 provide a clamping member 30. the base of which rests upon the flanged head 15 and which is secured in position by means of a cap bolt 31. The pin or shaft 2% also has a bearing in this member 30 and the pin 24 is provided with a notch at a point intermediate of its length. This notch cooperates with the cap bolt 31 and is held against longitudinal movement so long as the bolt is in position. The opening 32 in the member 30 accommodates the shaft 28, and as the member is split as at 33, the cap bolt 31 exerts a clamping force thereon.

The needle valve 19 is forced away from its seat by means of a spring 31, the spring bearing against a flanged head 35 on the needle valve stem 36. The position of the needle valve is controlled by means of a threaded shaft 37', mounted in a threaded opening in a projection 38 from the member 30. The threaded member 37 is turned by means of an arm 39 clamped to the unthreaded end of the member, the arm providing means such as the screw -10 for the attachment of the thin strip II which connects the corresponding arms of all cylinders. This arm, as best shown in Figs. 1 and 4, is in the form of a thin strip the portions between the points of connection and the arms being bent at a right angle. By reason of this construction the screws 40 which constitute the crank pins of the arms 39 need not be in exact alinement as the strip being flexible will readily adjust itself to any inequalities in alinement. lVhen adjusting the engine in order to provide for an equalsupply of fuel to each cylinder, the arms 39 are loosened on the threaded members 37' and a screw-drlver or similar tool is applied at the end of the threaded members thereby securing the proper adjustment. \Vhen properly adjusted the arms are clamped in place and the control of the engine is effected by a governor or other suitable means which may be attached to the projecting end 4-2 of the strip 41.

At the inner end of the valve body is mounted a cup 43 having the usual function and which is secured in place by means of the screw 44:. However, the cup is differently constructed from those heretofore employed. I have found that coking in the cup is reduced by providing for a greater cooling effect and this is secured by making the walls of the cup of considerably greater thickness and locating the same in intimate contact with the surrounding water cooled walls 45. Thus the heat within'the cup, which is relatively very high, is rapidly dissipated.

The value body and all the parts heretofore described as being associated therewith are held in place by the heavy cap screws 46, two of which are shown. In order to separate all the parts from the engine it is only necessary to remove the two bolts 46. The advantages of such a construction will be apparent without further description.

I have still further simplified the construction and made ready separability possible by connecting the fuel supply pipe to an opening 47, in the engine casting, the oil being supplied through a passage 5 .8, in the engine casting to a passage -19, in the valve body to the space surrounding the lower end of the needle valve. Thus the valve body may be removed without disconnecting any pipes. The construction of the fuel cup and the novel method of supplying the liquid fuel are claimed in a co-pending application.

The construction shown herein is compact and leaves much more room on top of the cylinder heads which may be used otherwise and it is much easier in an engine with a removable cylinder head to obtain sufficient room for the studs and nuts necessary to hold these two castings firmly together.

Obviously the construction here disclosed may be modified without departure from the spirit of my invention, and I do not wish to be limited except as indicated in the appended claims.

I claim:

1. In an engine, the combinationwith the cylinder and a main air inlet valve, of a fuel valve body'adapted to be inserted within a recess in the engine wall, a fuel receiving cup associated with said valve body, a valve for controlling the admission of fuel to the cup, a bracket on said valve body, a rocker arm for operating said main valve, and means operable b said fuel admisslon valve, the operating parts being removable as a unit with said said arm for actuating fuel, a rocker for actuating said main inlet valve, means operable by said rocker for actuating said fuel admission valve, and means for mounting said rocker on said plug whereby the plug and the main valve rocker may be removed and applied as a unit, substantially as described.

3. In a multicylinder engine, the combination of a fuel valve body for each cylinder, rocker arms for each cylinder, a separate rocker shaft for each cylinder and means carried by each valve body for mounting a rocker shaft thereon, substantially as described.

4. In a multicylinder engine, the combination of a fuel valve body for each cylinder, means carried by said valve body for controlling the admission and ignition of fuel, a main valve rocker arm for each cylinder, and a separate shaft and shaft mounting carried by each of said valve bodies for supporting a rocker arm, substantially as described.

In a multicylinder engine, having main inlet valves, the coi'nbination of a rocker arm for actuating said inlet valves, a fuel valve body for each cylinder and means mounted therein for controlling the admission and ignition of liquid fuel, and means including a separate shaft for mounting a rocker arm on each valve body whereby the valve body and rocker arms may be removed from one cylinder Without disturbing similar partson adjacent cylinders, substantially as described.

6. In a multicylindcr engine, the combination of a fuel valve body for each cylinder, a pair of rocker arms for each cylinder, a separate supporting shaft for each pair of rocker arms, and means carried by each valve body for supporting one of said rocker shafts thereon, substantially as described.

7. In a hydrocarbon engine, the combination with a. cylinder having a recess,-of aplug fitting said recess, a cup at the inner end of said plug, a. needle valve for controlling the quantity of liquid fuel to be admitted to said cup, a second valve for controlling the admission of said liquid fuel and a quantity of air, a third main inlet valve, a rocker for actuating said valve, a second rocker actuated by said first rocker for opening said second valve, and means for mounting both said rockers on said plug whereby all the associated parts may be separated from the engine as aunit, substantially as described.

8. In a hydrocarbon engine, the combination with a cylinder having a. recess, of a plug fitting said recess, a reciprocableadmission valve for liquid fuel and air, a rocker secured to said plug for cooperation with said valve, and a main inlet valve rocker also secured to said plug for actuating said first named rocker, substantially as described.

i). in a multicylimler engine, the combination of a fuel feeding valve for each cylinder adapted to be oscillated to controlthe position of said fuel feeding valve, and a flexible connecting member for the arms of the different cylinders, the flexibility of the connecting member permittirn slight variations of the positions of different arms with,

out binding, substantially as described.

10. In a multicylinder engine, the combination of fuel feeding devices for each cylinder, and a flexible strip connecting the fuel feeding devices of the different cylinders, substantially as described.

Signed at Chicago, Ill, this fifth day of June, 1919.

RASMUS IiVID.

llitness:

I P. LAUTH. 

